1100111213 has 2 divisors, whose sum is σ = 1100111214. Its totient is φ = 1100111212.

The previous prime is 1100111171. The next prime is 1100111219. The reversal of 1100111213 is 3121110011.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 764964964 + 335146249 = 27658^2 + 18307^2 .

It is an emirp because it is prime and its reverse (3121110011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1100111213 - 2¹⁰ = 1100110189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1100111194 and 1100111203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1100111219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550055606 + 550055607.

It is an arithmetic number, because the mean of its divisors is an integer number (550055607).

Almost surely, 2^1100111213 is an apocalyptic number.

It is an amenable number.

1100111213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100111213 is an equidigital number, since it uses as much as digits as its factorization.

1100111213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6, while the sum is 11.

The square root of 1100111213 is about 33167.9244602372. The cubic root of 1100111213 is about 1032.3149030623.

Adding to 1100111213 its reverse (3121110011), we get a palindrome (4221221224).

The spelling of 1100111213 in words is "one billion, one hundred million, one hundred eleven thousand, two hundred thirteen".